Insulator



May 10, 1927.

w. T. GODDARD INSULATOR Filed ocu-1 1921 v fill Patented May 10, 1927.

UNITED STATI?.

PATENT OFFICE..

VJALTER T. GODDARD, OF HAMILTON, ONTRIO, CANADA, ASSIGNOR TO LOCIE IN- SULATOR CORPORATION, 0F BALIMGR-E, MARYLAI'TD, A CORPORATION OF MARY* LAND.

INSULATOR.

Application filed October 1, 1921.

The invention relates to high tension insulators, and. more particularly to novel means for connecting the adjacent sections of a post insulator.

'lhe primary object of my invention, ln'oadly stated, is to provide a post insulator formed of a plurality of similar sections, the sections being-` adapted to be connected. by metallic elements which are arranged in such a manner as to equalize the strain upon the insulator and at tho same time to permit free expansion and contraction ot parts of the insulator under teinperature changes without detriment to the insulator or to the connecting mechanism.

A further object of the invention is to provide simple and effective means for securing insulating sections together, said means being located in such a manner to rigidly unite cach section to the adjacent sections without projecting beyond the face or surface of the insulator.

A still further object of the invention to provide novel kmeans for connecting the adjacent sections of a post insulator, said means being so positioned as to permit adjustment of the tension to be made after the parts have been assembled.

lilith these and other objects in view the invention relates to the various elements and con'ibinations of elen'ients hereinafter set forth, the novel features thereof being pointed out in the claims.

In the drawing wherein I have illustrated the invention,

The figure is a view partly in elevation and partly in section of a post insulator einbodying the invention.

.Referring more particularly to the drawh ing. I have illustrated a post insulator consisting of a plurality of sections of porcelain or other dielectric material, the sections 1, with the exception of the cap or upper section 2, being substantially identical in construction. Each section 1 is preferably formed as a disk having' a central imperforate web 3, a radial outwardly projecting flange eli, and a plurality of hub sections 5 and 6 on opposite sides of the flange 4. The seetions 1, while similar in form, are preferably of diiferent diameters. In other words. the hub 6 of the section 2 at the upper portion of the insulator While equal in diameter to the hub 5 of the section immediately .below Serial No. 504,697.

the same, .is of less diameter than the hub 6 of this adjacent section. It is to be understood of course that this change in diameter of the sections is merely n. preferred embodiment, and the sections may be ot' uni'orin di noter .if desired. Ilach. hub section is provided with a flat face to engage the adjacent coa/sting hub section in order to furnish a uniform bearing around the entire circumference of each hub section. ,To secure the sections together I provide a piura li yy of .*crtical openings 'i' in each hub soction, and intersecting these openin. 5 h a plurality of openings 8, the latt spaced on opposite sides of the web of eac disk. In other words, each opening S intersects one of the openings 7, and the openings 8 which intersect the openings i formed in one of the hubs 5 or 6, are above or below the web 3 of each section7 the case may be.

Seated within the openings S and positively maintained in exact position therein are the nuts 9 which are provided with screw threaded openings 10 adapted to receive the correspondingly formed ends of bolts 11. Preferably these nuts are maintained in position by filling the openings 8 with a ceinentitious compound. At the outer faces of the hub sections and adjacent their point of contact, I provide the of each opening 7 with an undercut and preferably semicircular recess 12. These recesses extend in wardly into the hub sections beyond the niarginai edge of the opening` i and are adapt ed for the reception of nuts The bolts 11 are provided with threaded ends 14 adapted to be received within the correspondingly threaded opening in the nuts 13. The nuts 13 and the bolts 11 forni in effect turnbuclle .means for securely connecting the sections of the insulator. f

The lower-most section is connected to the base member 15 by means of headed bolts 16, these bolts engaging the vnuts 9 vwhich are maintained in the openings S in the manner hereinbefore described. The openings 7 in the insulating sections and through the hase 15 are of' greater diameter than the boltsll. and 16. This enlargement of the openings in the base member permits the base to eX- pand and contract without causing detrimental strains upon the hub 6 of the ad jacent section, While the enlargement of the openings 7 in the intermediate seotions are fill proyided to permit a slight 'liexing ot the bolts in order to assemble the same Within the nuts The upper section Q, While pro- -vided on its under tace with a hub (i, is lormed on its upper t'ace with a groove 1T, a circular flange 1S, and an undercut circular groove 19 to provide means Yfor receiving and tying the transmission line to the insulator. rEhe base member l5 is preferably tlanged as at 20 and is 1furnished With a plurality of bolt openings Q1 for the bolts 22 which connect the saine to the support.

To assemble the deriee the. nuts 9 and belts il are lirst assembled in each section and then one section is lowered into the other until the adjacent ends ot the bolts il are seated within the nuts i3, said nuts being); preferably proyided with right and lett hand sei-enthreads whereby movement ot tne nuts in one direction will torce the tiro adjacent sections into intimate contact, and the rotation of the nuts in the opposite direction will enable the parts to be disassembled.

I claim l. In a high tension insulator, a plurality ot units ot insulating material arranged in supcrposcd relation, each Jtermed at its top and bottom rfith a cavityv and a series ot l openings communicating n'ith the and terminating short ol" the outer pc ery, each unit being turther Atmined with a plurality ot openings parallel to the longitudinal axis and communicating with l lirst named openings. the top and bottoni suraces ot the unit being formed n'ith recesses communicating with the second nan d openings, securing members located within the second nan ed openings and haring heads located Within the lirst named openings, and projecting into said recesses, and nut inelrl ers located within the mating recesses ot con guous units and threaded onto said securingmembers to act as turn buckles.

2. In a high tension insulator, a plurality of units ot insulating material arranged in superposed relation, each formed at its top and bottom With a cavity and a series ot radial openings communicating With the carity and terminating short of the outer periphery, each unit being Allutlier formed 1with a plurality7 ot openings parallel to the longitudinal axis and communicating with said lirst named openings, the top and bottom surfaces of the unit being formed with recesses communicating with the second named openings, securing members located Within the second named openings and hay ing heads located Within the tirst named openings, and projecting into said reces,r s, and nut members located within the mating recesses of contiguous units and threaded onto said securing members to act as turn buckles, said radial openings being )royided With ceinentitious material embed( ing the heads ot the securing members.

2l. ln a high tension insulator', a plurality ott units arranged in superposed relation and haring contacting taces formed with matingl recesses, securing bolts arranged in circular series and embedded within, the units with their threaded ends projecting into said recesses, and nut members upon said ends ot the bolts and located Within the mating recesses.

Li. A high tension insulator comprising a plurality ot units each termed as ay body ot insulating material, a plurality of turn buckle devices arranged in circumferential series tor holding adjacent units in clamping relation, each turn buckle including a pair olI bolt elements connected by nut n'leinbers and terminating in head portions, the. units having recesses iWithin which the head portions are engaged.y

In a high tension insulator, a plurality oit sections oit' insulating material ot disl form, nuts secured to said sections, and turnbucltle means tor engaging the nuts to secure the sections together.

6. ln a high .tension insulator, a pliuality oi" sections et insulating material ot disk toi-m proi'ided with annular concentric hub portions on opposite uraces thereof', the hub portions ot adjacent sections engaging each other, nuts secured to said sections, and turnbuelrle means for securing said sections together.

In testimony whereof ailix my signature.

lVl-LTER T. GODDARD. 

